1XT6 image
Deposition Date 2004-10-21
Release Date 2004-12-21
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1XT6
Keywords:
ELECTRON TRANSPORT
Title:
S35C Flavodoxin Mutant in the semiquinone state
Biological Source:
Source Organism:
Desulfovibrio vulgaris subsp. vulgaris (Taxon ID: 882)
Host Organism:
Desulfovibrio vulgaris
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.80 Å
R-Value Free:
0.26
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 43 21 2
1XT6 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Flavodoxin
Gene (Uniprot):DVU_2680
Mutations:S35C
Chain IDs:A
Chain Length:147
Number of Molecules:1
Biological Source:Desulfovibrio vulgaris subsp. vulgaris
UniProt ID:P00323 Pfam ID:PF00258
Ligand Molecules
FMN
Primary Citation
Structure of S35C flavodoxin mutant from Desulfovibrio vulgaris in the semiquinone state.
Acta Crystallogr.,Sect.D 61 481 484 (2005)
PMID: 15805604 DOI: 10.1107/S0907444905001502

Abstact

The crystallographic structure of an engineered flavodoxin mutant from Desulfovibrio vulgaris has been analysed. Site-directed mutagenesis was used to substitute serine 35 with a cysteine to provide a possible covalent linkage. The crystal structure of the semiquinone form of this mutant is similar to the corresponding oxidation state of the wild-type flavodoxin. Analysis of the structural changes reveals the interaction between N(5)H of the flavin and the carbonyl O atom of Gly61 to be critical for modulation of the electrochemical properties of the protein.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1XT6